Members of Parliament are elected every four years. Election day is the third Sunday of April. Every Finnish citizen who has reached the age of 18 not later than on the day of the election is entitled to vote in parliamentary elections. The Finnish Parliament comprises 200 representatives.
In parliamentary elections, the country is divided into electoral districts. A proportional number of MPs is elected from each electoral district. However, one MP is always elected from the Province of Åland. Candidates may stand in any electoral district, not only the district in which they reside.
Beginning in the 2015 Parliament elections, MPs will be elected in 13 electoral districts as opposed to the previous 15 districts. In Eastern Finland, two larger electoral districts—Southeast Finland and Savo-Karelia—have been formed.
Parliamentary elections are direct and proportional: the number of MPs from each group that nominated candidates corresponds to the number of votes received by that group in each electoral district.